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Avalanche Forecast

Apr 7th, 2019–Apr 8th, 2019
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Purcells.

Wind slabs may be reactive to human triggering at upper elevations.

Confidence

Moderate -

Weather Forecast

SUNDAY NIGHT - Cloudy with scattered flurries / southwest winds, 10-25 km/h / alpine low temperature near -5MONDAY - Cloudy with isolated flurries / southeast winds, 10-25 km/h / alpine high temperature near -2 / freezing level 1900 mTUESDAY - A mix of sun and cloud with scattered flurries, up to 5 cm / northwest winds, 10-25 km/h / alpine high temperature near -2 / freezing level 2000 mWEDNESDAY - Cloudy with sunny periods and scattered flurries, 5 cm / west winds, 10-15 km/h / alpine high temperature near -2 / freezing level 1800 m

Avalanche Summary

On Saturday, there were a few reports of natural and human triggered wind slab avalanches, mainly in the alpine on north and east facing slopes.On Thursday, there were a few reports of natural and human triggered storm and wind slab avalanches in the alpine, as well as a few human triggered loose wet avalanches.

Snowpack Summary

10-20 cm of recent storm snow sits on a melt-freeze crust on all aspects except for north slopes above 2000 m, where it sits on dry snow. Recent snowfall amounts taper quickly below treeline.The base of the snowpack is composed of sugary faceted snow. The likelihood of triggering an avalanche on this layer is lower during colder periods and elevated during intense warming.Snow is disappearing rapidly at lower elevations.

Avalanche Problems

Wind Slabs

Up to 20 cm of recent storm snow has been redistributed by strong southwest winds. Wind slabs have formed in lee areas in the alpine and at treeline.
Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects: North, North East, East, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5